package collection;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ListDemo {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();
        list.add("one");
        list.add("two");
        list.add("three");
        list.add("four");
        list.add("five");
        System.out.println("list:"+list);


        String e = list.get(2);
        System.out.println(e);

        for (int i=0;i< list.size();i++){
            System.out.println(list.get(i));
        }
        Iterator<String> it = list.iterator();
        while (it.hasNext()){
            System.out.println(it.next());
        }
        for (String s : list){
            System.out.println(s);
        }
        System.out.println("-----------------------------");
                String old = list.set(2,"six");
                System.out.println("list:"+list);
                System.out.println(old);



                String  s  =  list.remove(2);
                System.out.println("list:"+list);
                System.out.println(s);



                list.add(3,"seven");
                System.out.println(list);










    }
}
